package cn.com.greatwall.generator.rest;

import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import cn.com.greatwall.common.exception.BadRequestException;
import cn.com.greatwall.common.utils.PageUtil;
import cn.com.greatwall.generator.domain.ColumnInfo;
import cn.com.greatwall.generator.service.GenConfigService;
import cn.com.greatwall.generator.service.GeneratorService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.RequiredArgsConstructor;

/**
 * @Author herw
 * @Time 2020-11-07 14:03:07
 * @Version 1.0
 * @Description: TODO(用一句话描述该文件做什么)
 */
@RestController
@RequiredArgsConstructor
@RequestMapping("/api/generator")
@Api(tags = "系统：代码生成管理")
public class GeneratorController {
    private final GeneratorService generatorService;
    private final GenConfigService genConfigService;
    @Value("${generator.enabled}")
    private Boolean generatorEnabled;

    @ApiOperation("查询数据库数据")
    @GetMapping(value = "/tables/all")
    public ResponseEntity<Object> queryTables() {
        return new ResponseEntity<>(generatorService.getTables(), HttpStatus.OK);
    }
    
    @ApiOperation("查询数据库数据")
    @GetMapping(value = "/tables")
    public ResponseEntity<Object> queryTables(@RequestParam(defaultValue = "") String name,
            @RequestParam(defaultValue = "0") Integer page, @RequestParam(defaultValue = "10") Integer size) {
        int[] startEnd = PageUtil.transToStartEnd(page, size);
        return new ResponseEntity<>(generatorService.getTables(name, startEnd), HttpStatus.OK);
    }

    @ApiOperation("查询字段数据")
    @GetMapping(value = "columns")
    public ResponseEntity<Object> queryColumns(@RequestParam String tableName) {
        List<ColumnInfo> columnInfos = generatorService.getColumns(tableName);
        return new ResponseEntity<>(PageUtil.toPage(columnInfos, columnInfos.size()), HttpStatus.OK);
    }
    
    @ApiOperation("保存字段数据")
    @PutMapping
    public ResponseEntity<HttpStatus> save(@RequestBody List<ColumnInfo> columnInfos){
        generatorService.save(columnInfos);
        return new ResponseEntity<>(HttpStatus.OK);
    }

    @ApiOperation("同步字段数据")
    @PostMapping(value = "sync")
    public ResponseEntity<HttpStatus> sync(@RequestBody List<String> tables) {
        for (String table : tables) {
            generatorService.sync(generatorService.getColumns(table), generatorService.query(table));
        }
        return new ResponseEntity<>(HttpStatus.OK);
    }

    @ApiOperation("生成代码")
    @PostMapping(value = "/{tableName}/{type}")
    public ResponseEntity<Object> generator(@PathVariable String tableName, @PathVariable Integer type,
            HttpServletRequest request, HttpServletResponse response) {
        if (!generatorEnabled && type == 0) {
            throw new BadRequestException("此环境不允许生成代码，请选择预览或者下载查看！");
        }
        switch (type) {
        // 生成代码
        case 0:
            generatorService.generator(genConfigService.find(tableName), generatorService.getColumns(tableName));
            break;
        // 预览
        case 1:
            return generatorService.preview(genConfigService.find(tableName), generatorService.getColumns(tableName));
        // 打包
        case 2:
            generatorService.download(genConfigService.find(tableName), generatorService.getColumns(tableName), request,
                    response);
            break;
        default:
            throw new BadRequestException("没有这个选项");
        }
        return new ResponseEntity<>(HttpStatus.OK);
    }
}
